2 pic14 specific general functions.
4 Note that mlh prepended _pic14_ on the static functions. Makes
5 it easier to set a breakpoint using the debugger.
12 #include "SDCCmacro.h"
19 static char _defaultRules[] =
25 /* list of key words used by pic14 */
26 static char *_pic14_keywords[] =
53 pic14_options_t pic14_options;
55 #define ARG_STACKLOC "--stack-loc"
56 #define ARG_STACKSIZ "--stack-size"
58 extern int debug_verbose; /* from pcode.c */
59 static OPTION _pic14_poptions[] = {
60 { 0 , "--debug-xtra", &debug_verbose, "show more debug info in assembly output" },
61 { 0 , "--no-pcode-opt", &pic14_options.disable_df, "disable (slightly faulty) optimization on pCode" },
62 { 0 , ARG_STACKLOC, NULL, "sets the lowest address of the argument passing stack" },
63 { 0 , ARG_STACKSIZ, NULL, "sets the size if the argument passing stack (default: 16, minimum: 4)" },
64 { 0 , NULL, NULL, NULL }
67 void pCodeInitRegisters(void);
69 void pic14_assignRegisters (ebbIndex *);
71 /* Also defined in gen.h, but the #include is commented out */
72 /* for an unknowned reason. - EEP */
73 void pic14_emitDebuggerSymbol (char *);
75 static int regParmFlg = 0; /* determine if we can register a parameter */
80 asm_addTree (&asm_asxxxx_mapping);
81 memset (&pic14_options, 0, sizeof (pic14_options));
85 _pic14_reset_regparm (void)
91 _pic14_regparm (sym_link * l, bool reentrant)
93 /* for this processor it is simple
94 can pass only the first parameter in a register */
103 _process_pragma(const char *sz)
105 static const char *WHITE = " \t";
106 char *ptr = strtok((char *)sz, WHITE);
108 if (startsWith (ptr, "memmap"))
115 start = strtok((char *)NULL, WHITE);
116 end = strtok((char *)NULL, WHITE);
117 type = strtok((char *)NULL, WHITE);
118 alias = strtok((char *)NULL, WHITE);
120 if (start != (char *)NULL
121 && end != (char *)NULL
122 && type != (char *)NULL) {
123 value *startVal = constVal(start);
124 value *endVal = constVal(end);
128 if (alias == (char *)NULL) {
129 aliasVal = constVal(0);
131 aliasVal = constVal(alias);
134 r.start_address = (int)floatFromVal(startVal);
135 r.end_address = (int)floatFromVal(endVal);
136 r.alias = (int)floatFromVal(aliasVal);
137 r.bank = (r.start_address >> 7) & 3;
139 if (strcmp(type, "RAM") == 0) {
141 } else if (strcmp(type, "SFR") == 0) {
149 } else if (startsWith (ptr, "maxram")) {
150 // not used any more - comes from device config file pic14devices.txt instead
156 extern char *udata_section_name;
159 _pic14_parseOptions (int *pargc, char **argv, int *i)
163 /* TODO: allow port-specific command line options to specify
164 * segment names here.
167 /* This is a temporary hack, to solve problems with some processors
168 * that do not have udata section. It will be changed when a more
169 * robust solution is figured out -- VR 27-11-2003 FIXME
171 strcpy(buf, "--udata-section-name");
172 if(!strncmp(buf, argv[ *i ], strlen(buf))) {
173 if(strlen(argv[ *i ]) <= strlen(buf)+1) {
174 fprintf(stderr, "WARNING: no `%s' entered\n", buf+2);
177 udata_section_name = strdup( strchr(argv[*i], '=') + 1 );
185 extern set *dataDirsSet;
186 extern set *includeDirsSet;
187 /* pic14 port uses include/pic and lib/pic instead of
188 * include/pic14 and lib/pic14 as indicated by SDCCmain.c's
189 * setIncludePaths routine. */
191 _pic14_initPaths (void)
197 if (options.nostdinc)
200 tempSet = appendStrSet(dataDirsSet, NULL, INCLUDE_DIR_SUFFIX DIR_SEPARATOR_STRING "pic");
201 mergeSets(&includeDirsSet, tempSet);
203 if ((p = getenv(SDCC_INCLUDE_NAME)) != NULL)
205 addSetHead(&includeDirsSet, p);
206 p2=Safe_alloc(strlen(p)+strlen(DIR_SEPARATOR_STRING)+strlen("pic")+1);
210 strcat(p2, DIR_SEPARATOR_STRING);
212 addSetHead(&includeDirsSet, p2);
218 _pic14_finaliseOptions (void)
220 pCodeInitRegisters();
222 port->mem.default_local_map = data;
223 port->mem.default_globl_map = data;
225 /* Hack-o-matic: if we are using the flat24 model,
226 * adjust pointer sizes.
228 if (options.model == MODEL_FLAT24)
231 fprintf (stderr, "*** WARNING: you should use the '-mds390' option "
232 "for DS80C390 support. This code generator is "
233 "badly out of date and probably broken.\n");
235 port->s.fptr_size = 3;
236 port->s.gptr_size = 4;
237 port->stack.isr_overhead++; /* Will save dpx on ISR entry. */
239 port->stack.call_overhead++; /* This acounts for the extra byte
240 * of return addres on the stack.
241 * but is ugly. There must be a
245 fReturn = fReturn390;
249 if (options.model == MODEL_LARGE)
251 port->mem.default_local_map = xdata;
252 port->mem.default_globl_map = xdata;
256 port->mem.default_local_map = data;
257 port->mem.default_globl_map = data;
260 if (options.stack10bit)
262 if (options.model != MODEL_FLAT24)
265 "*** warning: 10 bit stack mode is only supported in flat24 model.\n");
266 fprintf (stderr, "\t10 bit stack mode disabled.\n");
267 options.stack10bit = 0;
271 /* Fixup the memory map for the stack; it is now in
272 * far space and requires a FPOINTER to access it.
275 istack->ptrType = FPOINTER;
282 _pic14_setDefaultOptions (void)
287 _pic14_getRegName (struct regs *reg)
294 extern char *processor_base_name(void);
297 _pic14_genAssemblerPreamble (FILE * of)
299 char * name = processor_base_name();
304 fprintf(stderr,"WARNING: No Pic has been selected, defaulting to %s\n",name);
307 fprintf (of, "\tlist\tp=%s\n",name);
308 fprintf (of, "\tradix dec\n");
309 fprintf (of, "\tinclude \"p%s.inc\"\n",name);
312 /* Generate interrupt vector table. */
314 _pic14_genIVT (FILE * of, symbol ** interrupts, int maxInterrupts)
318 if (options.model != MODEL_FLAT24)
320 /* Let the default code handle it. */
324 fprintf (of, "\t;ajmp\t__sdcc_gsinit_startup\n");
326 /* now for the other interrupts */
327 for (i = 0; i < maxInterrupts; i++)
331 fprintf (of, "\t;ljmp\t%s\n\t.ds\t4\n", interrupts[i]->rname);
335 fprintf (of, "\t;reti\n\t.ds\t7\n");
343 _hasNativeMulFor (iCode *ic, sym_link *left, sym_link *right)
346 sym_link *test = NULL;
350 //fprintf(stderr,"checking for native mult\n");
357 /* multiply chars in-place */
358 if (getSize(left) == 1 && getSize(right) == 1)
361 /* use library functions for more complex maths */
365 if ( IS_LITERAL (left))
367 fprintf(stderr,"left is lit\n");
369 val = OP_VALUE (IC_LEFT (ic));
371 else if ( IS_LITERAL (right))
373 fprintf(stderr,"right is lit\n");
375 val = OP_VALUE (IC_RIGHT (ic));
379 fprintf(stderr,"oops, neither is lit so no\n");
383 if ( getSize (test) <= 2)
385 fprintf(stderr,"yep\n");
388 fprintf(stderr,"nope\n");
394 /* Indicate which extended bit operations this port supports */
396 hasExtBitOp (int op, int size)
400 /* || op == GETHBIT */ /* GETHBIT doesn't look complete for PIC */
407 /* Indicate the expense of an access to an output storage class */
409 oclsExpense (struct memmap *oclass)
411 /* The IN_FARSPACE test is compatible with historical behaviour, */
412 /* but I don't think it is applicable to PIC. If so, please feel */
413 /* free to remove this test -- EEP */
414 if (IN_FARSPACE(oclass))
420 /** $1 is always the basename.
421 $2 is always the output file.
423 $l is the list of extra options that should be there somewhere...
424 MUST be terminated with a NULL.
426 static const char *_linkCmd[] =
428 "gplink", "$l", "-w", "-r", "-o \"$2\"", "\"$1\"", "$3", NULL
431 static const char *_asmCmd[] =
433 "gpasm", "$l", "-c", "\"$1.asm\"", NULL
437 extern set *libFilesSet;
438 extern set *libDirsSet;
439 extern set *libPathsSet;
440 extern set *includeDirsSet;
441 extern set *userIncDirsSet;
442 extern set *dataDirsSetSet;
443 extern set *relFilesSet;
444 extern set *linkOptionsSet;
446 static void _pic14_do_link (void)
448 hTab *linkValues=NULL;
457 * link command format:
458 * {linker} {incdirs} {lflags} -o {outfile} {spec_ofiles} {ofiles} {libs}
462 sprintf(lfrm, "{linker} {incdirs} {sysincdirs} {lflags} -w -r -o {outfile} {user_ofile} {spec_ofiles} {ofiles} {libs}");
464 shash_add(&linkValues, "linker", "gplink");
466 /* LIBRARY SEARCH DIRS */
467 mergeSets(&tSet, libPathsSet);
468 mergeSets(&tSet, libDirsSet);
469 shash_add(&linkValues, "incdirs", joinStrSet(appendStrSet(tSet, "-I\"", "\"")));
471 SNPRINTF (&temp[0], 128, "%cpic\"", DIR_SEPARATOR_CHAR);
472 joinStrSet(appendStrSet(libDirsSet, "-I\"", &temp[0]));
473 shash_add(&linkValues, "sysincdirs", joinStrSet(appendStrSet(libDirsSet, "-I\"", &temp[0])));
475 shash_add(&linkValues, "lflags", joinStrSet(linkOptionsSet));
477 shash_add(&linkValues, "outfile", fullDstFileName ? fullDstFileName : dstFileName);
479 if(fullSrcFileName) {
480 sprintf(temp, "%s.o", fullDstFileName ? fullDstFileName : dstFileName );
481 shash_add(&linkValues, "user_ofile", temp);
484 shash_add(&linkValues, "ofiles", joinStrSet(relFilesSet));
487 procName = processor_base_name();
492 addSet(&libFilesSet, "libsdcc.lib");
493 SNPRINTF(&temp[0], 128, "pic%s.lib", procName);
494 addSet(&libFilesSet, temp);
495 shash_add(&linkValues, "libs", joinStrSet(libFilesSet));
497 lcmd = msprintf(linkValues, lfrm);
499 ret = my_system( lcmd );
512 "MCU pic", /* Target name */
516 TRUE, /* Emit glue around main */
517 MODEL_SMALL | MODEL_LARGE | MODEL_FLAT24,
525 //"-plosgffc", /* Options with debug */
526 //"-plosgff", /* Options without debug */
529 NULL /* no do_assemble function */
534 _pic14_do_link, /* own do link function */
542 /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */
543 1, 2, 2, 4, 2, 2, 3, 1, 4, 4
544 /* TSD - I changed the size of gptr from 3 to 1. However, it should be
545 2 so that we can accomodate the PIC's with 4 register banks (like the
549 /* tags for generic pointers */
550 { 0x00, 0x00, 0x00, 0x80 }, /* far, near, xstack, code */
567 "CONST (CODE)", // const_name - const data (code or not)
568 "CABS (ABS,CODE)", // cabs_name - const absolute data (code or not)
571 1 // code is read only
577 /* pic14 has an 8 bit mul */
582 pic14_emitDebuggerSymbol
585 255/3, /* maxCount */
586 3, /* sizeofElement */
587 /* The rest of these costs are bogus. They approximate */
588 /* the behavior of src/SDCCicode.c 1.207 and earlier. */
589 {4,4,4}, /* sizeofMatchJump[] */
590 {0,0,0}, /* sizeofRangeCompare[] */
591 0, /* sizeofSubtract */
592 3, /* sizeofDispatch */
599 _pic14_finaliseOptions,
600 _pic14_setDefaultOptions,
601 pic14_assignRegisters,
604 _pic14_genAssemblerPreamble,
605 NULL, /* no genAssemblerEnd */
607 NULL, // _pic14_genXINIT
608 NULL, /* genInitStartup */
609 _pic14_reset_regparm,
611 _process_pragma, /* process a pragma */
614 hasExtBitOp, /* hasExtBitOp */
615 oclsExpense, /* oclsExpense */
617 // TRUE, /* little endian */
618 FALSE, /* little endian - PIC code enumlates big endian */
621 1, /* transform <= to ! > */
622 1, /* transform >= to ! < */
623 1, /* transform != to !(a == b) */
625 FALSE, /* No array initializer support. */
626 0, /* no CSE cost estimation yet */
627 NULL, /* no builtin functions */
628 GPOINTER, /* treat unqualified pointers as "generic" pointers */
629 1, /* reset labelKey to 1 */
630 1, /* globals & local static allowed */